Your answer is sublimation.
Propane torch is lit inside a hot air balloon during pre-flight preparation because the heat from the touch is needed to heat the cold air inside the balloon, so that the air will expand and become less dense and rise, thus providing a lift for the balloon. This is line with charle's law, which states that, the volume of a fixed mass of ideal gas is directly proportional to the absolute temperature. This law implies that, as the temperature of the air inside the balloon increase, the volume of the balloon also increases.
If you are referring to to the molecule, CO, it contains two atoms , C1+O1
precipitation, it is called precipitation
Ionic compounds contain both cations and anions in a ratio that results in no net electrical charge
